Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation.
A147064
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =1a(8) =4a(9) =1a(10) =6a(11) =1a(12) =14a(13) =3a(14) =43a(15) =10a(16) =133a(17) =29a(18) =604a(19) =96a(20) =3118a(21) =333a(22) =17061a(23) =1304a(24) =110347a(25) =7679a(26) =888486a(27) =55914
External references
- oeis: A147064